JP2018064532A - Roasting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roasting device that can roast an object while stirring the object satisfactorily in a roast container, while preventing the magnitude of movement of at least one end side of the roast container.SOLUTION: A roasting device 10 includes: a roast container 20 for containing an object to be roasted; a rotation support unit 40 for supporting and rotating the roast container 20; and a heating unit 50 for heating the object in the roast container 20 of a state rotated by the rotation support unit 40. The roast container 20 is formed in a diagonal tubular shape where a tube body 21 extends diagonally to one end side 23 of a tube body 21. The rotation support unit 40 supports the roast container 20 so that a rotating shaft X of a roast container 20 may be perpendicular to one end side 23 and the other side face 22 of the tube body 21 may be rotationally moved around the rotating shaft X when the roast container 20 is rotated.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roasting apparatus for roasting objects such as coffee beans.

  Conventionally, various apparatuses have been proposed as roasting apparatuses for roasting objects such as coffee beans. Patent Document 1 describes an apparatus for roasting coffee or grains such as sesame, rice, and beans.

  Specifically, in the apparatus described in Patent Document 1, the roasting container is rotated in a twisted state by the support portions provided to be eccentric on both sides of the roasting container. Further, in this apparatus, the roasting container is detachable from the rotating tool. The roasted grain is drawn out with the roasting container removed. After the new grain is supplied, the roasting container is installed.

Japanese Patent No. 3914737

  By the way, in the conventional apparatus, since the roasting container is rotated in a twisted state, the object to be roasted is well stirred and the object is roasted uniformly. On the other hand, in the conventional apparatus, as one of the problems, it is necessary to remove the roasting container in order to take out the roasted object from the roasting container, and it takes time and effort to take out the object. However, it is difficult to move each end face of the roasting container so that the object can be discharged from the roasting container without removing the roasting container. It is difficult for conventional devices to improve convenience in connection with roasting containers due to the magnitude of this movement.

  The present invention has been made in view of such circumstances, and roasts while properly stirring an object in the roasting container while suppressing the magnitude of movement of at least one end surface of the roasting container. It is an object of the present invention to provide a roasting apparatus that can be used.

  In order to solve the above-described problems, the first invention is rotated by a roasting container that accommodates an object to be roasted, a rotation support part that supports and rotates the roasting container, and a rotation support part. A heating unit for heating the object in the roasting container in a state, the roasting container is formed in an oblique cylinder shape in which the cylinder body extends obliquely with respect to one end surface of the cylinder body, and the rotation support part is A roasting device that supports a roasting container so that the rotation axis of the roasting container is orthogonal to one end surface and the other end surface of the cylinder body rotates around the rotation axis when the roasting container is rotated. is there.

  In a second aspect based on the first aspect, the rotation axis of the roasting container passes through the center of the one end surface.

  According to a third invention, in the first or second invention, a part of the closing member that closes the opening larger than the opening at the other end of the cylinder body constitutes the other end surface, and the center of gravity of the closing member is Closer to the axis of rotation than the center of gravity.

  According to a fourth invention, in any one of the first to third inventions, a container cover for covering the roasting container is further provided, and one end surface has a discharge port for discharging the object, and the container cover Is provided with a first wall surface facing the one end surface in the vicinity, and a door member is provided at a portion facing the lower end of the one end surface.

  According to a fifth invention, in the fourth invention, a control unit for controlling the rotation support unit is further provided, and the control unit controls the rotation support unit so that the roasting container continuously rotates around the rotation axis in the same direction. And a rotation support portion so that the roasting container swings around the rotation position of the roasting container in a state where the discharge port faces the door member and the one end surface is located below the other end surface. 2nd control which controls is performed.

  In a sixth aspect based on any one of the first to fifth aspects, the one end surface of the cylinder body is an opening surface.

  In the first invention, since the rotation axis of the roasting container is orthogonal to the one end face of the cylinder body, the one end face of the cylinder body rotates within a substantially constant plane. Therefore, the movement of one end face of the cylinder body is smaller than that of a conventional apparatus in which the inclination of each end face changes greatly during rotation of the roasting container.

  In the first invention, when the roasting container is rotated, the other end surface of the cylinder main body rotates about the rotation axis. For this reason, the movement of the other end of the roasting container is greater than that in the case where the other end surface of the cylinder body does not rotate (that is, the rotation axis of the roasting container passes through the center of the other end surface of the cylinder body). The object in the roasting vessel is well agitated. According to the first aspect of the present invention, it is possible to perform roasting while satisfactorily stirring the object in the roasting container while suppressing the magnitude of the movement of at least one end surface of the roasting container.

  In the first invention, for example, when one end surface of the cylinder main body has a discharge port for the object, and when the container cover is further provided to form the opening in the container cover, the opening is close to the discharge port. The object can be discharged from the roasting container without removing the roasting container. According to 1st invention, it is easy to improve the convenience regarding a roasting container. Each of the one end surface and the other end surface of the cylinder body may be an opening surface or a plate surface. Needless to say, when one end surface of the tube main unit is a plate surface, the one end surface does not necessarily have a flat plate shape and may be uneven.

  In 2nd invention, since the rotating shaft of a roasting container passes along the center of the end surface of a cylinder main body, when rotating a roasting container, an end surface does not move. Therefore, it is easy to further improve convenience in connection with the roasting container.

  In the third invention, the center of gravity of the closing member that closes the opening at the other end of the cylinder body is closer to the rotation axis than the center of gravity of the other end surface of the cylinder body. Therefore, for example, compared with the case where the center of gravity of the closing member coincides with the center of gravity of the other end surface, the center of gravity of the roasting container approaches the rotation axis, and the circumferential load when rotating the roasting container can be made uniform.

  In 4th invention, by closing the door member provided in the 1st wall surface part of the container cover, it can prevent reliably that a target object falls from a roasting container during roasting, By opening a door member, The roasted object can be discharged from the roasting container. According to 4th invention, it can comprise so that a target object can be discharged | emitted from a roasting container, without removing a roasting container.

  In the fifth invention, the roasting container automatically swings around the rotation position of the roasting container in a state where the discharge port faces the door member and the one end surface is located on the lower side by the second control by the control unit. To do. Therefore, the object can be automatically discharged from the roasting container.

The schematic block diagram of the upper part of the roasting apparatus which concerns on embodiment Front view of first wall surface portion of container cover of roasting device Front view of second wall surface of container cover of roasting device (A) Perspective view of roasting container, (b) Front view of closing member Schematic plan view for explaining the gas circulation flow path of the roasting device Schematic configuration diagram for explaining a gas circulation channel and a cooling unit of a roasting apparatus

  Hereinafter, embodiments according to the present invention will be described in detail with reference to FIGS. The following embodiment is an example of the present invention, and is not intended to limit the scope of the present invention, its application, or its use.

[1. About the configuration of roasting equipment]
The roasting device 10 is a coffee bean roasting device that roasts coffee beans (objects). The roasting apparatus 10 employs a method of heating coffee beans using far infrared rays. As illustrated in FIGS. 1 to 3, the roasting device 10 includes a roasting container 20 (roasting drum 20) that stores coffee beans, a container cover 30 (housing 30) that covers the roasting container 20, A rotation support unit 40 that supports and rotates the roasting container 20 and a heating unit 50 that heats the coffee beans in the roasting container 20 that is rotated by the rotation support unit 40 are provided.

  In FIG. 1, the inside and outside of the container cover 30 are indicated by solid lines, and the heating unit 50 is hatched. Moreover, in FIG. 1, description of the gas circulation flow path 60 mentioned later is abbreviate | omitted. In the present embodiment, the left side in FIG. 1 is the front side of the roasting apparatus 10 and the right side in FIG. Further, the left side in FIG. 2 is the left side of the roasting apparatus 10, and the right side in FIG.

  As shown in FIG. 4A, the roasting container 20 is a bottomed cylindrical container having one end opened and the other end closed. The roasting container 20 includes a cylinder main body 21 (part constituting the side surface) and a closing member 18 that closes the opening on the other end side of the cylinder main body 21. The roasting container 20 is formed in an oblique cylindrical shape (outer shape is an oblique cylindrical shape) in which the tubular body 21 extends obliquely with respect to the opening surface 23 at one end thereof.

  The roasting container 20 is configured to pass far infrared rays. In the roasting container 20, a plurality of slits 21 a through which far infrared rays pass is formed in the cylinder body 21. The width of each slit 20a is set so that coffee beans cannot pass through. In the cylinder body 21, a plurality of slits 21a are arranged in the circumferential direction on one end side and the other end side. Each slit 21a extends along the extending direction of the cylinder body 21, but is slightly inclined with respect to the extending direction. The one end side and the other end side are opposite in inclination direction. In addition, the roasting container 20 should just be comprised so that at least the cylinder main body 21 may pass far infrared rays. For example, a material (for example, a net-like sheet material) that allows far-infrared rays to pass through the tube body 21 without forming the slits 21a may be used.

  The cylinder body 21 is formed of a thin metal plate, and a coating that absorbs far infrared rays (for example, ceramic coating) is applied to the outer surface of the cylinder body 21. The color of the coating is, for example, black. Therefore, the coffee beans in the roasting container 20 are heated by the far infrared rays that pass through the slits 20a and the cylinder main body 21 that is heated by the far infrared rays. The amount of heat held by the cylinder body 21 is increased by coating. In addition, when a stirring member such as a blade is provided in the roasting container 20 to stir the coffee beans, the far infrared rays are difficult to reach the coffee beans by the stirring member. Therefore, in the present embodiment, the stirring is performed in the roasting container 20. The member is not attached. Moreover, the shape and color of the roasting container 20 are not limited to this embodiment.

  The closing member 18 is a flat circular metal plate and is larger than the opening on the other end side of the cylinder body 21. The closing member 18 is provided in parallel to the opening surface 23. In the closing member 18, a circular region that closes the other end side of the cylinder body 21 constitutes a bottom surface portion 22 in the cylinder body 21. The center position of the bottom surface portion 22 and the opening surface 23 are shifted from each other. A center line connecting the center of the opening surface 23 and the center of the bottom surface portion 22 extends obliquely with respect to the opening surface 23 (or a rotation axis X described later).

  Further, the center of the closing member 18 is shifted from the center of the bottom surface portion 22 in the direction opposite to the direction in which the center of the bottom surface portion 22 is shifted from the center of the opening surface 23 (downward in FIG. 4). The center of gravity of the closing member 18 is closer to the rotation axis X than the center of gravity of the bottom surface portion 22. The closing member 18 extends from the edge of the bottom surface portion 22 in the reverse direction described above, and a balance weight 27 is attached to the tip of the portion extending in the reverse direction. The balance weight 27 is formed in a rectangular plate shape and is attached to the front side of the closing member 18.

  Further, a ring portion 24 protruding from the outer peripheral surface is provided on one end side of the cylinder main body 21. The roasting container 20 is supported by the ring portion 24 by rotating rollers 43a and 43b described later.

  The opening surface 23 of the tube main body 21 functions as an inlet for introducing coffee beans into the roasting container 20, an outlet for discharging coffee beans from the roasting container 20, and an inlet for introducing gas into the roasting container 20. To do. A plurality of bean turning members 29 are provided on one end side of the inner peripheral surface of the tube main body 21. Each leg turning member 29 is a rod-like member that is slightly bent, and is attached obliquely so that the outer end precedes the inner end in the rotation direction (clockwise in FIG. 4A). Each bean returning member 29 inhibits the coffee beans from moving to the outside of the roasting container 20 when the roasting container 20 is rotated in the clockwise direction in FIG. However, when the roasting container 20 is rotated counterclockwise in FIG. 4A (when the roasting is rotated in the counterclockwise direction described later), the coffee beans are not hindered from moving outside the roasting container 20. . Note that a plate-like member may be used for the bean turning member 29.

  Further, as shown in FIG. 4B, a plurality of rear openings 22 a are formed in the bottom surface portion 22. Each of the rear openings 22a is an arcuate slit centered on a fitting hole 22b into which a drive shaft 42a to be described later is fitted. The width of each rear opening 22a is set so that coffee beans cannot pass through. The plurality of rear openings 22a are formed at equal intervals in the radial direction in a region excluding the vicinity of the fitting hole 22b. The fitting hole 22b is formed on the rotation axis X. Each of the rear openings 22 a functions as an exhaust port for discharging gas from the roasting container 20. In FIG. 3, the description of the rear opening 22a is omitted.

  The container cover 30 is a substantially cylindrical box whose upper part can be opened and closed. The container cover 30 is provided on the pedestal 100. The pedestal 100 is supported by a plurality of legs. As shown in FIGS. 2 and 3, the container cover 30 includes a first wall surface portion 31 facing the opening surface 23 in the cylinder body 21 and a second wall surface portion facing the bottom surface portion 22 (the closing member 18). 32, a pair of side wall portions 33, 34 extending between a lower portion of the first wall surface portion 31 and a lower portion of the second wall surface portion 32, and a lid portion 35 that surrounds the cylindrical main body 21 together with the pair of side wall portions 33, 34. I have. 2 and 3, the opening forming region of the first wall surface portion 31 or the second wall surface portion 32 is hatched.

  The first wall surface portion 31 and the second wall surface portion 32 are both flat plate members and extend in the vertical direction. The first wall surface portion 31 and the second wall surface portion 32 are provided in parallel with each other and facing each other. Further, the outer shape of the container cover 30 when viewed from the right side or the left side is a rectangle. The first wall surface portion 31 is parallel to the opening surface 23, and the second wall surface portion 32 is parallel to the bottom surface portion 22. Moreover, the cover part 35 is connected with the upper end part of one side wall part 33 through the hinge. The lid 35 is engaged with the other side wall 34 on the opposite side of the hinge, and the lid 35 is closed.

  A partition member 36 is provided in the container cover 30 between the bottom surface portion 22 and the second wall surface portion 32. In the container cover 30, an exhaust space 37 is formed between the partition member 36 and the second wall surface portion 32. The main surface portion of the partition member 36 faces the bottom surface portion 22 and faces, and an opening 36a is formed at an upper position (see FIG. 3). The gas in the roasting vessel 20 flows out from each of the rear openings 22a of the bottom surface portion 22, passes through the openings 36a, and flows into the exhaust space 37.

  Further, on the bottom surface of the container cover 30, there is provided a tray 38 on which an infrared radiator (for example, stone or ceramic) that emits far infrared rays when heated by the heating unit 50 is placed. In this embodiment, a plurality of stones are laid on the tray 38. The coffee beans in the roasting container 20 are also heated by far-infrared rays emitted from the stone below. An infrared radiator may be used as a material for the bottom surface of the tray 38.

  An opening portion 19 to which the introduction duct 39 is connected is formed in a portion of the first wall surface portion 31 that faces the upper portion of the opening surface 23. The introduction duct 39 extends upward from the connection portion with the first wall surface portion 31. A chute portion 39 a that extends upward is provided on the upper portion of the introduction duct 39. When coffee beans are put into the chute portion 39 a, the coffee beans pass through the introduction duct 39, the opening 19 of the first wall surface portion 31, and the opening surface 23 and fall into the roasting container 20. Note that a top plate channel 64d described later is connected to the introduction duct 39 (see FIG. 6). An introduction-side damper 17 that opens and closes the introduction duct 39 is provided on the upstream side of the connection location of the top plate channel 64 d in the introduction duct 39.

  Further, a bean outlet 26 is formed in a portion of the first wall surface portion 31 that faces the lower end portion of the opening surface 23. The bean outlet 26 is blocked by the door member 25. The door member 25 has an upper end attached to the outer surface of the first wall surface portion 31 with a hinge. The door member 25 is provided with a window (not shown) so that the inside of the container cover 30 can be seen from the outside.

  Inside the lid portion 35, a top plate channel 64d that constitutes a part of a gas circulation channel 60 described later is formed. An inlet of the top plate channel 64 d is formed at the upper end of the second wall surface portion 32, and an outlet of the top plate channel 64 d is formed at the upper end of the first wall surface portion 31.

  The rotation support unit 40 has a rotation axis X of the roasting container 20 orthogonal to the opening surface 23 (one end surface), and the bottom surface portion 22 (the other end surface) around the rotation axis X when the roasting container 20 is rotated. ) Supports the roasting container 20 so as to rotate. The rotation axis X of the roasting container 20 passes through the center of the opening surface 23. Specifically, the rotation support unit 40 includes a motor 41, a power transmission unit 42 that transmits the power of the motor 41 to the roasting container 20, and a first support that rotatably supports the opening surface 23 side of the roasting container 20. Part 43 and a second support part 44 that rotatably supports the bottom face part 22 side of the roasting container 20.

  The power transmission unit 42 includes a drive shaft 42a integrated with the bottom surface portion 22, a first gear 42b attached to the drive shaft 42a, and a second gear attached to the rotation shaft of the motor 41 and meshing with the first gear 42b. 42c. The drive shaft 42 a is fitted into the fitting hole 22 b and is fixed on the rotation axis X in the bottom surface portion 22. The fixed position of the drive shaft 42 a is eccentric with respect to the center of the bottom surface portion 22. When the rotational force of the motor 41 is transmitted to the drive shaft 42a via the first gear 42b and the second gear 42c, the roasting container 20 rotates together with the drive shaft 42a.

  The 1st support part 43 supports the ring part 24 of the roasting container 20 so that the center position of the opening surface 23 may be kept constant. In this embodiment, the 1st support part 43 is a pair of rotating rollers 43a and 43b (refer FIG. 3) which supports the ring part 24 from the lower side. Each rotation roller 43a, 43b is rotatably attached to a shaft member fixed to the inner surface of the first wall surface portion 31.

  The second support portion 44 is a bearing that slidably supports the drive shaft 42a. The second support portion 44 is fixed to the outer surface of the second wall surface portion 32. In the present embodiment, the roasting container 20 is lifted so that the ring portion 24 is separated from each of the rotating rollers 43a and 43b, and the drive shaft 42a is pulled out of the fitting hole 22b of the bottom surface portion 22, so that the roasting container 20 is removed. Can be removed. Although heat insulating materials are affixed to the inner surfaces of the first wall surface portion 31, the second wall surface portion 32, the lid portion 35, etc., the heat insulating material of the first wall surface portion 31 does not interfere when the roasting container 20 is removed. Thus, it is provided so that a gap may be formed between the upper end of the roasting container 20.

  The heating unit 50 includes a pair of first heater unit 51 and second heater unit 52 that radiate far infrared rays. Each heater part 51 and 52 is arrange | positioned at the upper side of the roasting container 20 so that powders, such as chaff falling from the roasting container 20, may not be applied, and is attached to the inner surface of the cover part 35 so that the roasting container 20 may be faced. . A pair of heater parts 51 and 52 are arrange | positioned left-right symmetrically when the roasting apparatus 10 is seen from the front side. Each heater part 51 and 52 is diagonally provided along the inclination direction of the roasting container 20 in the state (state of FIG. 1) where the bottom face part 22 is located on the uppermost side.

  Each heater part 51 and 52 is comprised by two rod-shaped heaters (for example, ceramic heater) of an inner side heater and the outer side heater arrange | positioned on the outer side of an inner side heater. The inner heater of the first heater unit 51 and the inner heater of the second heater unit 52 are directed to the center of the roasting container 20 in a cross-sectional view. The outer heater of the first heater unit 51 and the outer heater of the second heater unit 52 are directed to the bottom surface of the roasting container 20 in a cross-sectional view. Thereby, the coffee beans in the roasting container 20 can be heated uniformly.

  As shown in FIGS. 5 and 6, the roasting apparatus 10 includes a gas circulation channel 60 that circulates gas inside and outside the roasting container 20, and a cooling unit that cools coffee beans roasted in the roasting container 20. 70. FIG. 5 is a schematic plan view for explaining the gas circulation channel 60, and illustrations of the rotation support unit 40, the cooling unit 70, and the like are omitted. FIG. 6 is a schematic configuration diagram for explaining the gas circulation channel 60 and the cooling unit 70, and illustration of the rotation support unit 40 and the like is omitted. In FIG. 5, the top plate channel 64d is hatched, and an arrow indicating the gas flow direction is shown only for the section until it is discharged from the roasting container 20 and flows into the top plate channel 64d. Yes. In FIG. 6, locations where openings are formed are indicated by broken lines.

  The gas circulation channel 60 has an inlet connected to the exhaust space 37 and an outlet connected to the introduction duct 39. Specifically, the gas circulation channel 60 circulates gas in the upstream side duct 61 whose inlet opens to the exhaust space 37, the cylindrical container 62 to which the outlet of the upstream side duct 61 is connected, and the gas circulation channel 60. And a downstream duct 64 that connects the outlet of the fan 63 and the introduction duct 39.

  An upstream duct 61 is connected to the upper portion of the cylindrical container 62 along the tangential direction of the cylindrical container 62. In the cylindrical container 62, the gas flowing in from the upstream duct 61 swirls, so that the chaff contained in the gas is separated by the centrifugal force and falls. The lower portion of the cylindrical container 62 is tapered, and an opening is formed at the lower end. A container 81 for collecting the dropped chaff is connected to this opening.

  The fan 63 is, for example, a cyclone fan that swirls and discharges gas sucked from below. The inlet of the fan 63 is located below the connection location of the upstream duct 61 in the cylindrical container 62. The gas from which the chaff is removed flows into the inlet of the fan 63. A filter 65 that supplements powder (chuff powder) that could not be removed by the cylindrical container 62 is detachably provided on the downstream side of the blades of the fan 63.

  Further, the downstream duct 64 includes a fan side channel 64a, a branching portion 64b, a cover side channel 64c, and a top plate channel 64d from the upstream side (that is, the fan 63 side). The fan-side flow path 64a extends from the discharge port of the fan 63 to the entrance of the branch part 64b. The branch part 64b has two outlets, one of which is connected to the inlet of the cover side flow path 64c and the other of which is connected to the inlet of the exhaust duct 66. The outlet of the cover side channel 64 c is connected to the inlet of the top plate channel 64 d in the second wall surface part 32. The top plate channel 64 d extends to the first wall surface 31 and is connected to the introduction duct 39. The exhaust duct 66 extends upward from the branch portion 64b. The exhaust duct 66 is provided with an exhaust side damper (not shown) that opens and closes the exhaust duct 66.

  As shown in FIG. 6, the cooling unit 70 rotates the perforated plate 71 that receives the coffee beans discharged from the bean outlet 26, the surrounding wall 72 that surrounds the perforated plate 71, and the perforated plate 71. A motor 73 and a suction mechanism 74 that sucks air from below the perforated plate 71 are provided. A circular punching metal is used for the perforated plate 71. The enclosure wall 72 is installed on the pedestal 101. Further, the surrounding wall 72 is provided with a leveling plate (not shown) so as to cross over the perforated plate 71. When the perforated plate 71 rotates, the coffee beans on the perforated plate 71 are leveled by the leveling plate.

  The suction mechanism 74 includes a suction duct 74a having an inlet opening in a lower space of the perforated plate 71 in the enclosure wall 72, a cylindrical container 74b to which an outlet of the suction duct 74a is connected, and air in the cylindrical container 74b. And a fan 74c. A suction duct 74a is connected to the upper part of the cylindrical container 74b along the tangential direction of the cylindrical container 74b. In the cylindrical container 74b, the air flowing in from the suction duct 74a swirls, so that the chaff contained in the air is separated by the centrifugal force and falls. A lower portion of the suction duct 74a is tapered, and an opening is formed at the lower end. A container 82 for collecting the dropped chaff is connected to the opening. The fan 74c is, for example, a cyclone fan that swirls and discharges air sucked from below. The inlet of the fan 74c is located below the connection location of the suction duct 74a in the cylindrical container 74b. On the downstream side of the blades of the fan 74c, a filter 74d that supplements powder (chuff powder) that could not be removed by the cylindrical container 74b is detachably provided.

[2. How to use roasting apparatus 10]
A method for using the roasting apparatus 10 will be described. As shown in FIG. 1, the roasting apparatus 10 further includes a control unit 90 that controls the operation of the roasting apparatus 10. The control unit 90 includes a first control for controlling the motor 41 so that the roasting container 20 continuously rotates in the same direction around the rotation axis X, and a state in which the one end surface 23 is positioned below the other end surface 22. The second control is performed to control the motor 41 so that the roasting container 20 swings with respect to the rotation axis X around the rotational position of the roasting container 20 in FIG. The control process is performed by the processor of the control unit 90 reading, executing, and interpreting the program stored in the memory.

  Here, as shown in FIG. 3, the roasting apparatus 10 has a projecting portion 91 projecting in the radial direction from the outer peripheral surface of the drive shaft 42 a, and a projecting portion as a configuration for controlling the peristaltic range of the roasting container 20. A pair of sensors 92 and 93 for detecting 91 is provided. For example, when the protrusion 91 is a metal, a magnetic sensor can be used for each of the sensors 92 and 93. With the bottom surface portion 22 positioned on the uppermost side, the protruding portion 91 protrudes vertically downward. The pair of sensors 92 and 93 are provided outside the container cover 30 and are disposed symmetrically with respect to the drive shaft 42a. Note that a power source (not shown) is connected to the motor 41, the heaters 51 and 52, the fan 63, the fan 74c, and the motor 73. The user uses the roasting device 10 by operating an operation panel (not shown) provided on the front side of the roasting device 10.

  First, when the user presses the start button on the operation panel, the control unit 90 performs a preheating operation for preheating the roasting container 20. In the preheating operation, electric power is supplied to the heater units 51 and 52, and the roasting container 20 is heated by far infrared rays emitted from the heater units 51 and 52.

  Subsequently, the control unit 90 ends the preheating operation after the elapse of a predetermined time and starts the roasting operation. At the start of the roasting operation, the user opens the introduction-side damper 17 and puts coffee beans into the roasting container 20 from the chute portion 39a. In the roasting operation, power supply to the heater units 51 and 52 is continued, and the motor 41 and the fan 63 are driven. During the roasting operation, the first control is performed on the motor 41. Then, the roasting container 20 continuously rotates clockwise (in the direction of the arrow shown in FIG. 2) around the rotation axis X when viewed from the front side of the roasting apparatus 10. In the roasting container 20, only the other end surface 22 of the one end surface 23 and the other end surface 22 rotates.

  Since the other end surface 22 rotates about the rotation axis X, the other end surface 22 side of the cylinder body 21 moves up and down while rotating. Thereby, the coffee beans in the cylinder main body 21 are moved and stirred in the up-down direction and the front-rear direction. Since only the other end surface 22 side of the roasting container 20 moves up and down, the coffee beans on the inner surface of the tube body 21 are stirred so as to be rolled on the frying pan.

  Moreover, far infrared rays are irradiated from each heater part 51,52, and the coffee beans in the roasting container 20 pass through each slit 20a, the cylinder main body 21 heated by the far infrared rays, and the tray 38. It is heated by the far infrared rays emitted from the stone and gradually roasted.

  In the initial stage of the roasting operation, the introduction-side damper 17 and the exhaust-side damper are set to the open state. Then, air (fresh air) flows into the roasting container 20 from the introduction duct 39. The gas in the roasting container 20 together with the water evaporated from the coffee beans, each rear opening 22a, opening 36a, exhaust space 37, upstream duct 61, cylindrical container 62, fan 63, fan side flow path 64a. Then, the air passes through the branch part 64b and the exhaust duct 66 in order, and is discharged to the outside. In the initial stage of the roasting operation, the coffee beans are heated and the moisture of the coffee beans is blown away.

  In the middle period of the roasting operation, the control unit 90 stops the fan 63. Therefore, the inflow of air into the roasting container 20 is stopped, and the temperature in the roasting container 20 rises.

  In the latter stage of the roasting operation, the control unit 90 drives the fan 63. Further, the introduction side damper 17 and the exhaust side damper are set in a closed state. The gas in the roasting container 20 (the gas containing the scent of coffee beans) is discharged from the roasting container 20 through the gas circulation channel 60 as shown by the arrow in FIG. Return. Specifically, the gas in the roasting container 20 flows into the gas circulation channel 60 through each rear opening 22a, the opening 36a, and the exhaust space 37 in order. In the gas circulation channel 60, the gas passes in the order of the upstream duct 61, the cylindrical container 62, the fan 63, the fan side channel 64a, the branching part 64b, the cover side channel 64c, and the top plate part channel 64d. . The gas that has passed through the gas circulation channel 60 returns to the roasting container 20 through the introduction duct 39. In the latter stage of the roasting operation, the chaff is discharged from the roasting container 20 while suppressing the scent of coffee beans from being released to the outside.

  The controller 90 ends the roasting operation after a predetermined time has elapsed, and starts the discharging operation. In switching from the roasting operation to the discharging operation, the control on the motor 41 is switched from the first control to the second control. Specifically, the control unit 90 stops the motor 41 immediately after detecting the protruding portion 91 by the sensor 92. Thereby, rotation of the roasting container 20 is stopped in a state where the protruding portion 91 is located between the pair of sensors 92 and 93 (a state where the one end face 23 is located below the other end face 22). Then, the control unit 90 rotates the motor 41 again and reverses the rotation direction of the motor 41 every time one of the pair of sensors 92 and 93 detects the protruding portion 91. As a result, the roasting container 20 swings around the rotation axis X in a state where the one end face 23 is positioned below the other end face 22. When the user opens the door member 25, the coffee beans in the roasting container 20 fall on the perforated plate 71 through the opening surface 23 and the bean outlet 26.

  The controller 90 supplies power to the fan 74c and the motor 73 at the start of the discharge operation. As a result, the motor 73 is driven to rotate the perforated plate 71 and the coffee beans on the perforated plate 71 are leveled. Further, the fan 74c is driven, and air passes through the perforated plate 71 from the upper side to the lower side, and the coffee beans are cooled by this air.

  When all the coffee beans in the roasting container 20 are discharged, the operation is switched from the discharge operation to the roasting operation. Control over the motor 41 is switched from the second control to the first control. Coffee beans are roasted again in the roasting container 20 by putting the coffee beans into the roasting container 20 from the chute portion 39a. In the present embodiment, since the next coffee bean can be roasted while the roasted coffee beans are cooled by the cooling unit 70, the coffee beans can be continuously roasted.

[3. Effects of the embodiment]
In the present embodiment, since the rotation axis X of the roasting container 20 is orthogonal to the one end surface 23 of the cylinder body 21, the one end surface 23 rotates in a substantially constant plane. In particular, since the rotation axis X of the roasting container 20 passes through the center of the one end face 23, the one end face 23 does not move when the roasting container 20 is rotated. Therefore, the movement of the one end face 23 is smaller than that of a conventional apparatus in which the inclination of each end face changes greatly during the rotation of the roasting container 20. Further, when the roasting container 20 is rotated, the other end surface 22 of the cylinder main body 21 rotates around the rotation axis X. Therefore, compared with the case where the other end surface 22 does not rotate, the movement of the other end side of the roasting container 20 is large, and the coffee beans in the roasting container 20 are well stirred. According to this embodiment, the coffee beans can be roasted in the roasting container 20 while being satisfactorily stirred while suppressing the magnitude of the movement of at least one end surface 23 of the roasting container 20.

  Moreover, in this embodiment, since each slit 21a of the cylinder main body 21 is formed along the extending | stretching direction of the cylinder main body 21, the coffee bean on the inner surface of the cylinder main body 21 tends to move along the slit 21a. Therefore, stirring of coffee beans is further promoted. Further, the coffee beans are easily caught and rotated in each slit 21a, and uniform roasting on the front and back of each coffee bean can be promoted.

  Moreover, in this embodiment, the end surface 23 which is an opening surface becomes a coffee bean discharge port, and the bean discharge port 26 is formed in the container cover 30. Then, the bean outlet 26 is brought close to the one end face 23 so that the coffee beans can be discharged from the roasting container 20 without removing the roasting container 20. Further, the introduction duct 39 is connected to the upper portion of the first wall surface portion 31 so that coffee beans can be supplied from the introduction duct 39 to the roasting container 20 without removing the roasting container 20. According to this embodiment, the labor of supplying and discharging coffee beans can be reduced.

  In the present embodiment, the center of gravity of the closing member 18 that closes the opening at the other end of the cylinder body 21 is closer to the rotation axis X than the center of gravity of the other end surface 22 of the cylinder body 21. Therefore, the center of gravity of the roasting container 20 becomes relatively close to the rotation axis X, and the load of the motor 41 when rotating the roasting container 20 can be made uniform. Furthermore, in the present embodiment, by providing the balance weight 27, the load of the motor 41 can be made more uniform.

  In the present embodiment, by the second control by the control unit 90, the roasting container 20 is centered on the rotational position of the roasting container 20 in a state where the opening surface 23 faces the door member 25 and the opening surface 23 is positioned on the lower side. Automatically activates. Therefore, coffee beans can be automatically discharged from the roasting container 20.

  In the present embodiment, the roasting container 20 is rotated by rotating the drive shaft 42 a fixed on the rotation axis X in the bottom surface portion 22. Therefore, the drive shaft 42a does not move when the roasting container 20 is rotated. Therefore, the support part 44 of the drive shaft 42a can be simplified.

[4. Other Embodiments]
In the above-described embodiment, the object to be roasted by the roasting device 10 may be something other than coffee beans (for example, grains such as rice).

  In the above-described embodiment, a method for heating coffee beans may be a method other than a method using far infrared rays (for example, a method using hot air).

  In the above-mentioned embodiment, the shape of the roasting container 20 may be, for example, a polygonal oblique tube or other shapes. Further, the other end surface 22 is not parallel to the one end surface 23 and may be inclined with respect to the vertical direction.

  In the above-described embodiment, the rotation axis X of the roasting container 20 may be off the center of the one end face 23. In this case, for example, the distance from the center of the one end face 23 to the rotation axis X is shorter than the distance from the center of the other end face 22 to the rotation axis X.

  In the above-described embodiment, the one end surface 23 of the tube body 21 may be a plate surface on which openings functioning as coffee bean inlets and outlets are formed.

  The present invention is applicable to a roasting apparatus for roasting an object such as coffee beans.

DESCRIPTION OF SYMBOLS 10 Roasting apparatus 20 Roasting container 21 Cylinder body 22 Bottom face part 23 Opening face 30 Container cover 40 Rotation support part 41 Motor 42 Power transmission part 42a Drive shaft 50 Heating part

In the first invention, for example, when one end surface of the cylinder main body has a discharge port for the object, and when the container cover is further provided to form the opening in the container cover, the opening is close to the discharge port. The object can be discharged from the roasting container without removing the roasting container. According to 1st invention, it is easy to improve the convenience regarding a roasting container. Each of the one end surface and the other end surface of the cylinder body may be an opening surface or a plate surface. Further, needless to say, if one end surface of the cylindrical present body is a plate surface, one end surface may be uneven not necessarily a flat plate.

Claims (6)

A roasting container for containing an object to be roasted;
A rotation support part for supporting and rotating the roasting container;
A heating unit for heating the object in the roasting container in a state of being rotated by the rotation support unit,
The roasting container is formed in an oblique cylinder shape in which the cylinder body extends obliquely with respect to one end surface of the cylinder body,
The rotation support unit is configured such that the rotation axis of the roasting container is orthogonal to the one end surface, and the other end surface of the cylinder body rotates around the rotation axis when the roasting container is rotated. Further, the roasting apparatus is characterized by supporting the roasting container.   The roasting apparatus according to claim 1, wherein a rotation axis of the roasting container passes through a center of the one end surface. A part of the closing member that closes the opening larger than the opening at the other end of the cylinder body constitutes the other end surface,
The roasting apparatus according to claim 1, wherein the center of gravity of the closing member is closer to the rotation axis than the center of gravity of the other end surface. A container cover for covering the roasting container;
The one end surface has a discharge port for discharging the object,
The container cover includes a first wall portion facing the one end face in proximity to the first cover,
The roasting apparatus according to any one of claims 1 to 3, wherein a door member is provided in a portion facing the lower end portion of the one end surface of the first wall surface portion. A control unit for controlling the rotation support unit;
The control unit includes a first control that controls the rotation support unit so that the roasting container continuously rotates in the same direction around the rotation axis, and the discharge port faces the door member and the other end surface. And performing a second control for controlling the rotation support portion so that the roasting container swings around the rotation position of the roasting container in a state where the one end surface is located on the lower side. The roasting apparatus according to claim 4. The roasting apparatus according to any one of claims 1 to 5, wherein one end surface of the cylinder body is an opening surface.

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